Which situation does NOT correctly illustrate an action-reaction pair as per Newton's third law?
A car accelerating due to its engine
Newton's third law says that for every action there is an equal and opposite reaction, and the two forces act on two different bodies. A foot kicking a ball and the ball pushing the foot back, a hand pushing a wall and the wall pushing the hand back, and a hammer striking a nail and the nail pushing the hammer back are all valid pairs — each is a pair of forces on two distinct bodies.
A car accelerating due to its engine, however, describes only the effect on the car itself. The actual action-reaction pair here is between the tyres and the road (the tyres push the road backward, the road pushes the tyres forward). Simply saying the engine accelerates the car does not identify two bodies exerting equal and opposite forces on each other.
Hence, the answer is A car accelerating due to its engine.
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